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ConfigMaps hold general configuration data as key-value pairs; Secrets store sensitive data like credentials and TLS keys with restricted access controls.

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Aug 30, 2026

Quiz: What is Content Negotiation in REST APIs?

… nt Negotiation allows clients to request specific data representations (e.g. Accept: application/json ).

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Aug 30, 2026

Quiz: What is the outcome of a SQL ROLLBACK statement during a transaction?

ROLLBACK reverts database modifications made since the last BEGIN TRANSACTION point.

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Aug 30, 2026

Quiz: What is a SQL Deadlock?

… when concurrent transactions acquire circular locks; database engines detect deadlocks and abort one of the transactions.

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Aug 30, 2026

Quiz: What is the purpose of the SQL EXPLAIN command?

EXPLAIN (or EXPLAIN ANALYZE ) shows how database engines execute queries, highlighting index usage and scan costs.

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Aug 30, 2026

Quiz: What is the difference between `makemigrations` and `migrate` in Django?

… migration files; migrate applies pending migrations to the database.

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